Refer io the exhibit. While applying the configurations on two routers an engineer notices that OSPF adjacency Between them remains down. Through the ping test the engineer confirmed that both me routers have Layer 3 reachability between them. Which action should me engineer take to make the adjacencies to full?

• A.Delete the area 0 authentication message-digest command from the OSPF process in R2
• B.Enter the command ip ospf authentication in R2 interface
• C.Delete the area 0 authentication message-digest command from the OSPF process in R1
• D.Enable OSPF just inside the router OSPF process not in the interfaces of any router

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What is the function of BGP confederations?

• A.They eliminate the need for a fully-meshed internal BGP design.
• B.They require routers to use private AS numbers.
• C.They assign an external BGP router to serve as the route reflector
• D.They enable a single device to distribute a common configuration to its peers

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Refer to the exhibit.

An MPLS core network has connectivity issues R4 has failed. It impacts traffic loss between R1 and R8. Customers report no access to their file servers, which delays their transformation work. Which quick action resolves the issue until R4 recovers?

• A.Implement Link and Node protection on routers R2 and R7.
• B.Enable MPLS TE fast reroute on router R1 and Link and Node protection on router R2.
• C.Disable traffic engineering so that traffic prefers the IGP path
• D.Configure IBGP full mesh for faster convergence.

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Refer to the exhibit. Routers R1, R2, R3, and R4 are peer routers that reside in different administrative domains. PIM-SM is running in each autonomous system, and EBGP is configured between the peers. A network administrator has just implemented MSDP between the connected peers. When the administrator enabled the MSDP configuration, R1 and R2 failed to establish a peering relationship. All other connected routers successfully established peering sessions.
Which action must the engineer take to resolve the issue between R1 and R2?

• A.Change the MSDP authentication method to clear text.
• B.Set the same MSDP password on both peers.
• C.Configure the peers to be in the same autonomous system.
• D.Implement BGP authentication between the peers.

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Refer to the exhibit.

Which tree does multicast traffic follow?

• A.source tree
• B.MDT default
• C.MDT voice
• D.shared tree

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